cannot login to azure ad joined computer

With a premium Azure AD plan (P1 or P2, also included in higher end Microsoft 365 plans) you can enable additional features: It also helps with Office 365 activation. Highly recommended as a time saver for your users. It uses the AD credentials of the user session for authentication, the user will at most be asked for their username (UPN) the first time access a Microsoft cloud service for the first time. Seamless Single Sign-on: this allows users to bypass most Microsoft 365 authentication prompts when connecting from AD joined computers with the appropriate polices configured.

This won't allow user to log on to Microsoft 365 if your AD is unreachable, but allows you to use your AD policies to control access (logon times, fine grained password policy, etc.).

Pass trough authentication: this an alternative to the above where AAD authentication requests get passed on to AD.

This works even if your AD is unreachable.

Password hash sync: your AD password hashes get pushed to AAD so the user uses the same password on-prem and on the cloud.

Whit the minimum Azure AD plan included in Microsoft 365 subscriptions you can enable these features: The official MS guidance on this is at Prepare a non-routable domain for directory synchronization Opens a new window.Īzure AD Connect is an agent you install on a DC, it syncs some of your on-prem AD objects to their equivalent in Azure AD (mainly users and security groups, not OUs or containers). This will allow the user jdoe to login on a domain computer with AD will take the SAM account name ( jdoe) or the UPN without a care, they both identify the same user object. Whether you do the rename or not, add the the public domain as a UPN suffix in Active Directory an set all users' UPN to match their email address. Microsoft recommends you use a subdomain of your publicly routable domain (i.e.

It's not required, but it's not considered a good option nowadays. First thing, you want to do a rename on that.

Cannot login to azure ad joined computer